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41 lines
594 B
C
41 lines
594 B
C
#ifndef LEXER_H
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#define LEXER_H
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enum
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{
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LX_UNTERMINATED_STRING = -1,
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LX_INVALID_CHARACTER = -2,
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};
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enum
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{
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LX_EOF = 256,
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LX_TAG,
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LX_NUMBER,
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LX_STRING,
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LX_VERSION,
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LX_LPAREN,
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LX_RPAREN,
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};
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typedef struct
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{
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/* source code */
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int line;
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/* lexer state */
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const char* current;
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const char* end;
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/* lookahead */
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int token;
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const char* start;
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unsigned len;
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}
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lx_state_t;
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int lx_next( lx_state_t* lexer );
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void lx_new( lx_state_t* lexer, const char* source, unsigned srclen );
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#endif /* LEXER_H */
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